Dr. Pamela Munster, a UCSF breast cancer specialist diagnosed with breast cancer, poses for a portrait with her daughter Maya Daud, 10, and their dog Sampson at Crissy Field in San Francisco, CA, Saturday June 7, 2014.

Dr. Pamela Munster, a UCSF breast cancer specialist diagnosed with...

Dr. Pamela Munster's colleagues viewed the mammogram results and then played out a scene she knows well: the furrowed brow, the intense look of concern, followed by the composed, reassuring face for the patient's benefit.

To continue reading this story, you will need to be a digital subscriber to SFChronicle.com.